TITLE:
Preparation Characterization and Thermal Behaviour of Carbopol-TiO2 Nanocomposites
AUTHORS:
Samia Chalal, Nabila Haddadine, Naima Bouslah, Sihem Souilah, Ahmed Benaboura, Regis Barille, A. Haroun
KEYWORDS:
Carbopol, TiO2-Fellers, Nanocomposite, Thermal Proprieties, FT-IR Spectroscopy
JOURNAL NAME:
Open Journal of Organic Polymer Materials,
Vol.4 No.3,
August
8,
2014
ABSTRACT: Composites consisting of carbopol (CP) and ceramic titanium dioxide
nanoparticles, TiO2 have been investigated. The CP-TiO2,
organic-inorganic hybrid composites have been prepared in DMF by heating the mixture with a constant rate of 1。C/min, up to 30。C, 45。C,
60。C, 80。C, 100。C and 120。C. Proprieties such as absorption, structure and external aspect of the
obtained materials were investigated by Uv-vis, FTIR, DRX and SEM analyses. The X-ray diffraction patterns confirmed that
the TiO2 nanoparticles maintained their original tetragonal anatase-type
crystalline structure in the composites. The chemical structure of the obtained
materials was determined by ATR-FTIR spectroscopy. The influence of TiO2 nanoparticles on the thermal proprieties of carbopol matrix was investigated
using thermo-gravimetric analysis and differential scanning calorimetry. The
glass transition temperature (Tg) of the carbopol matrix was
considerably increased by the presence of ceramic feller nanoparticles and its
thermal stability was significantly improved. Furthermore the water loss which
represents 7.56% of the weight loss in pure CP at 100。C was avoided in the
CP-TiO2 nanocomposites at this same temperature. This important
finding revealed that ceramic fellers blocked the water loss in the modified
carbopol nanocomposites, which stayed stable till 200。C.